.type_title {
    width: 1700px;
    height: 80px;
    margin: 25px auto;
    font-size: 30px;
    line-height: 45px;
    background-color: #f0f8ff;
    padding-left: 43vw;
    
  }
  h2 {
    background-color: aliceblue;
    text-shadow: 2px 2px 2px gainsboro;
    padding: 20px 0;
    margin: 30px auto;
    width: 1200px;
  }
  
  .nav {
    position: fixed;
    top: 180px;
    left: 10px;
    width: 120px;
    font-size: 20px;
    background: white;
    padding: 10px;
    border: 1px solid rgb(119, 63, 119);
    border-radius: 5px;
    list-style: none;
    z-index: 100;
  }
  
  .nav li {
    line-height: 30px;
    text-align: center;
    margin-top: 10px;
    cursor: pointer;
  }
  
  .nav .active {
    color: purple;
    font-weight: bolder;
    filter: drop-shadow(0 0 10px purple);
  }
  
  .nav li:hover {
    color: purple;
    font-weight: bolder;
    filter: drop-shadow(0 0 10px purple);
  }
